[sturat]

I recently purchased a pretty roached 2008 335xi to specifically learn how to fix things. It’s my sanity break with almost no work coming in with COVID. My skill level is pretty low but I learn quickly and I am really enjoying the machine. I have hit most of the easy fixes. Thanks to this forum and YouTube for so much help. I am trying to trace down a boost pressure issue and I hope someone can help identify what I am looking at. I believe it is in place of the stock charcoal filter but no amount of searching has help me find this modification. There is a stylized “a” followed by “active” on top of the canister. Bit rusty being a MN car. Any help would be great. Lots of rusty hose clamps to get through.

[IllSic_Design]

That would be a blow off valve(it's aftermarket, our cars come stock with diverter valves) that is connected to your charge pipe. The blow off valve is made by Active Autowerke

[sturat]

Ah I know it as a waste gate. Thanks. Off I go. Thank you

[IllSic_Design]

Originally Posted by sturat

Ah I know it as a waste gate. Thanks. Off I go. Thank you

No problem. The waste gate(s) are in the turbos, on the turbine wheel side. They are what open to allow exhaust gas to bypass the turbine wheel to control the boost pressure the turbos make

[sturat]

So I am feeling like I have so much to learn. So technically this is not street legal. Not really too concerned but I’m guessing the software has been tuned as well. Any real downsides to having this system on my 335 say besides gas mileage? I have been on their site but it only give a real brief overview of the product. Just looking to get an opinion of it. Thanks again for your timely response.

[stewbets]

It looks like the vacuum nipple on that blow off valve is disconnected, unless I'm looking at something else. There should be a vacuum line running from the blow off valve to the intake manifold, and if this is missing it would explain your boost leak.

[sturat]

Thanks Stewbets I’ll look into that. I think I’ll have to give them a call. I should find out how to maintain it.

[IllSic_Design]

Originally Posted by sturat

So I am feeling like I have so much to learn. So technically this is not street legal. Not really too concerned but I’m guessing the software has been tuned as well. Any real downsides to having this system on my 335 say besides gas mileage? I have been on their site but it only give a real brief overview of the product. Just looking to get an opinion of it. Thanks again for your timely response.

It depends on the state. It technically is not going to affect emissions, but some states don't like it/them. It doesn't mean it has a tune necessarily, some people just like the sound of a blow of valve rather than the stock diverter valves.

[fgpalmer71]

You'd have to check obviously, but I'd highly doubt that you have anything to worry about emissions wise if your in MN where you said the car came from.

[Bimmer_Engineer]

Fwiw it looks like the o ring on your power steering reservoir is leaking...that’s like a 3 dollar eBay fix...